Chain row screening device for harvesting rhizome crops

Abstract

The utility model discloses a chain row screening device for harvesting rhizome crops, which comprises a coarse screening grid chain row and a fine screening grid chain row, the front end of the fine screening grid chain row is positioned below the rear end of the coarse screening grid chain row, and the width of grids of the coarse screening grid chain row is larger than that of grids of the fine screening grid chain row; the coarse screen grid chain row is wound on a coarse screen driving chain wheel and a coarse screen driven chain wheel, the coarse screen driving chain wheel is fixed on a coarse screen driving chain wheel shaft, and the coarse screen driven chain wheel is fixed on a coarse screen driven chain wheel shaft; the fine screen grid chain row is wound on the fine screen driving chain wheel and the fine screen driven chain wheel, the fine screen driving chain wheel is fixed on the fine screen driving chain wheel shaft, and the fine screen driven chain wheel is fixed on the fine screen driven chain wheel shaft. During use, large soil blocks on crops are screened out through the coarse screen grid chain row, then small soil blocks are screened out through the fine screen grid chain row, soil separation is thorough through two-stage screening, the fine screen grid chain row has the effect of only leaking soil but not leaking crops, and the crops are harvested as many as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural harvesting equipment, in particular to a chain screening device for harvesting root crops. Background Art

[0002] During the annual Pseudostellaria heterophylla harvesting season, a large amount of manual labor is required to collect and obtain it. After working for a long time, fatigue increases and work efficiency is reduced, so mechanical equipment for harvesting Pseudostellaria heterophylla has emerged.

[0003] Since Pseudostellariae Radix grows in the soil, it can only be obtained by digging, and the process will be stained with soil. Mechanical equipment only has the functions of digging and transmission, and does not have the function of cleaning the soil. It also needs manual cleaning, which is not only time-consuming and labor-intensive, but also reduces the harvesting efficiency of Pseudostellariae Radix. In view of the above problems, there is an urgent need for a screening device installed on the harvesting equipment of Pseudostellariae Radix for cleaning the soil. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the technical problem to be solved by the utility model is: to provide a chain screening device for harvesting root crops, which can automatically clean up the soil formed by the root crops when the root crops are harvested.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A chain screening device for harvesting root crops, comprising: a coarse screen square chain and a fine screen square chain, wherein the front end of the fine screen square chain is located below the rear end of the coarse screen square chain, and the width of the squares of the coarse screen square chain is greater than the width of the squares of the fine screen square chain;

[0007] The coarse screen square chain row is wound on the coarse screen driving sprocket and the coarse screen driven sprocket, the coarse screen driving sprocket is fixed on the coarse screen driving sprocket shaft, and the coarse screen driven sprocket is fixed on the coarse screen driven sprocket shaft;

[0008] The fine screen square chain row is wound on a fine screen driving sprocket and a fine screen driven sprocket. The fine screen driving sprocket is fixed on a fine screen driving sprocket shaft, and the fine screen driven sprocket is fixed on a fine screen driven sprocket shaft.

[0009] Preferably, a coarse screen driving sprocket and a fine screen driving sprocket are fixedly connected to the coarse screen driving sprocket shaft, a fine screen driving driven sprocket is fixedly connected to the fine screen driving sprocket shaft, and the fine screen driving sprocket is transmission-connected to the fine screen driving driven sprocket via a chain.

[0010] Preferably, the coarse screen grid chain row comprises a plurality of coarse screen pins which are evenly spaced along the circumferential direction thereof, a plurality of coarse screen chain plates are rotatably mounted between two adjacent coarse screen pins, the plurality of coarse screen chain plates are evenly spaced on the coarse screen pins, and the positions of the coarse screen chain plates on two adjacent coarse screen pins correspond to each other;

[0011] The fine screen square chain row includes a plurality of fine screen pins equally spaced along its circumferential direction, a plurality of fine screen chain plates are rotatably installed between two adjacent fine screen pins, the plurality of fine screen chain plates are equally spaced on the fine screen pins, and the positions of the fine screen chain plates on two adjacent fine screen pins correspond to each other.

[0012] Preferably, coarse screen vibration wheels are respectively provided below both sides of the upper chain row of the coarse screen square chain row, and fine screen vibration wheels are respectively provided below both sides of the upper chain row of the fine screen square chain row.

[0013] After adopting the above technical solution, the beneficial effects of the utility model are:

[0014] The present application is provided with two-stage grid chain rows, namely a coarse screen grid chain row and a fine screen grid chain row. The fine screen grid chain row is located behind the coarse screen grid chain row. When in use, the coarse screen grid chain row first screens out large pieces of soil on the crops, and then the fine screen grid chain row screens out small pieces of soil. After two-stage screening, the soil is separated completely, and the fine screen grid chain row has the effect of only leaking the soil but not the crops, so as to harvest as much crops as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view structural schematic diagram of an embodiment of the utility model of a chain screening device for harvesting root and tuber crops;

[0016] Figure 2 This is a schematic diagram of the main structure of an embodiment of the chain screening device for harvesting root and tuber crops of the utility model;

[0017] Figure 3 yes Figure 2 A partial enlarged structural diagram of the medium and coarse screen square chain row;

[0018] Figure 4 This is a schematic structural diagram of an embodiment of the chain row screening device for harvesting root and tuber crops of the utility model without the chain row;

[0019] Figure 5 It is a structural schematic diagram of a harvesting device using the chain screening device for harvesting root and tuber crops of the utility model;

[0020] In the figure: 10, coarse screen grid chain row; 101, coarse screen pin shaft; 102, coarse screen chain plate; 11, coarse screen driving sprocket shaft; 12, coarse screen driving sprocket; 13, coarse screen driven sprocket shaft; 14, coarse screen driven sprocket; 15, coarse screen drive sprocket; 16, fine screen drive driving sprocket; 17, coarse screen vibration wheel; 20, fine screen grid chain row; 21, fine screen driving sprocket shaft; 22, fine screen driving sprocket; 23, fine screen driven sprocket shaft; 24, fine screen driven sprocket; 25, fine screen drive driven sprocket; 26, fine screen vibration wheel; 30, engine; 40, shovel plate; 50, material box. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] like Figure 1 and Figure 2 As shown together, a chain row screening device for harvesting root crops comprises: a coarse screen square grid chain row 10 and a fine screen square grid chain row 20, wherein the front end of the fine screen square grid chain row 20 is located below the rear end of the coarse screen square grid chain row 10, and the width of the square grid of the coarse screen square grid chain row 10 is greater than the width of the square grid of the fine screen square grid chain row 20;

[0023] The coarse screen square chain row 10 is wound on the coarse screen driving sprocket 12 and the coarse screen driven sprocket 14. The coarse screen driving sprocket 12 is fixed on the coarse screen driving sprocket shaft 11, and the coarse screen driven sprocket 14 is fixed on the coarse screen driven sprocket shaft 13.

[0024] The fine screen grid chain row 20 is wound around the fine screen driving sprocket 22 and the fine screen driven sprocket 24 . The fine screen driving sprocket 22 is fixed on the fine screen driving sprocket shaft 21 , and the fine screen driven sprocket 24 is fixed on the fine screen driven sprocket shaft 23 .

[0025] like Figure 5 As shown, the coarse screen grid chain row 10 and the fine screen grid chain row 20 are installed on the harvesting equipment and are located behind the shovel board 40. The shovel board 40 scoops up crops such as Radix Pseudostellariae from the field and transports them to the coarse screen grid chain row 10. The coarse screen grid chain row 10 operates to transport the crops backward to the fine screen grid chain row 20, and the fine screen grid chain row 20 then transports the crops to the rear material box 50. During the transportation process, due to the vibration generated by the chain row itself when it is running and the vibration generated by the operation of the harvesting equipment, the chain row jumps up and down to shake off the soil attached to the crops. Among them, the coarse screen grid chain row 10 first shakes off large pieces of soil, and the fine screen grid chain row 20 then shakes off small pieces of soil. In addition, the grids of the fine screen grid chain row 20 are relatively small, so that only soil can pass through but not crops, so as to prevent crops from being discarded and harvest as many crops as possible.

[0026] like Figure 5 As shown, the coarse screen driving sprocket shaft 11 is fixedly connected with a coarse screen driving sprocket 15 and a fine screen driving sprocket 16, the fine screen driving sprocket shaft 21 is fixedly connected with a fine screen driving driven sprocket 25, and the fine screen driving sprocket 16 is drivingly connected to the fine screen driving driven sprocket 25 through a chain. The coarse screen driving sprocket 15 is driven by an engine 30, and when the coarse screen driving sprocket 15 rotates, the coarse screen grid chain row 10 is driven to operate, and at the same time, the fine screen driving sprocket shaft 21 is driven to rotate through the fine screen driving sprocket 16 and the fine screen driving driven sprocket 25, so that the fine screen grid chain row 20 operates.

[0027] The coarse screen square chain row 10 and the fine screen square chain row 20 have similar structures. Figure 3 As shown, the coarse screen square chain row 10 includes a plurality of coarse screen pins 101 that are evenly spaced along the circumferential direction thereof, and a plurality of coarse screen chain plates 102 are rotatably mounted between two adjacent coarse screen pins 101, and the plurality of coarse screen chain plates 102 are evenly spaced on the coarse screen pins 101, and the positions of the coarse screen chain plates 102 on two adjacent coarse screen pins 101 correspond. The coarse screen driving sprocket 12 and the coarse screen driven sprocket 14 are adapted to the coarse screen pins 101, and the coarse screen driving sprocket 12 and the coarse screen driven sprocket 14 drive the coarse screen square chain row 10 to operate by driving the coarse screen pins 101.

[0028] The fine screen grid chain row 20 includes a plurality of fine screen pins distributed at equal intervals along the circumferential direction thereof, and a plurality of fine screen chain plates are rotatably installed between two adjacent fine screen pins, and the plurality of fine screen chain plates are distributed at equal intervals on the fine screen pins, and the positions of the fine screen chain plates on the two adjacent fine screen pins correspond. The fine screen active sprocket 22 and the fine screen driven sprocket 24 are adapted to the fine screen pins, and the fine screen active sprocket 22 and the fine screen driven sprocket 24 drive the fine screen grid chain row 20 to operate by driving the fine screen pins.

[0029] Rotatable coarse screen vibration wheels 17 are provided at the lower sides of the upper chain of the coarse screen grid chain 10. When the coarse screen pin 101 moves to the coarse screen vibration wheel 17, the coarse screen pin 101 is supported by the coarse screen vibration wheel 17, thereby generating vibration, further enhancing the vibration of the coarse screen grid chain 10 and enhancing the soil separation effect. Rotatable fine screen vibration wheels 26 are provided at the lower sides of the upper chain of the fine screen grid chain 20. When the fine screen pin moves to the fine screen vibration wheel 26, the fine screen pin is supported by the fine screen vibration wheel 26, thereby generating vibration, further enhancing the vibration of the fine screen grid chain 20 and enhancing the soil separation effect.

[0030] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A chain screening device for harvesting root crops, characterized in that: include: A coarse screen square chain row and a fine screen square chain row, wherein the front end of the fine screen square chain row is located below the rear end of the coarse screen square chain row, and the width of the squares of the coarse screen square chain row is greater than the width of the squares of the fine screen square chain row; The coarse screen square chain row is wound on the coarse screen driving sprocket and the coarse screen driven sprocket, the coarse screen driving sprocket is fixed on the coarse screen driving sprocket shaft, and the coarse screen driven sprocket is fixed on the coarse screen driven sprocket shaft; The fine screen square chain row is wound on a fine screen driving sprocket and a fine screen driven sprocket. The fine screen driving sprocket is fixed on a fine screen driving sprocket shaft, and the fine screen driven sprocket is fixed on a fine screen driven sprocket shaft.

2. The chain screening device for harvesting root crops according to claim 1, characterized in that: The coarse screen driving sprocket shaft is fixedly connected with a coarse screen driving sprocket and a fine screen driving sprocket, the fine screen driving sprocket shaft is fixedly connected with a fine screen driving driven sprocket, and the fine screen driving driving sprocket is drivingly connected to the fine screen driving driven sprocket through a chain.

3. The chain screening device for harvesting root crops according to claim 1, characterized in that: The coarse screen square chain row includes a plurality of coarse screen pins distributed at equal intervals along the circumferential direction thereof, a plurality of coarse screen chain plates are rotatably installed between two adjacent coarse screen pins, the plurality of coarse screen chain plates are distributed at equal intervals on the coarse screen pins, and the positions of the coarse screen chain plates on the two adjacent coarse screen pins correspond to each other; The fine screen square chain row includes a plurality of fine screen pins equally spaced along its circumferential direction, a plurality of fine screen chain plates are rotatably installed between two adjacent fine screen pins, the plurality of fine screen chain plates are equally spaced on the fine screen pins, and the positions of the fine screen chain plates on two adjacent fine screen pins correspond to each other.

4. The chain screening device for harvesting root crops according to claim 3, characterized in that: Coarse screen vibration wheels are respectively provided below the two sides of the upper chain row of the coarse screen square chain row, and fine screen vibration wheels are respectively provided below the two sides of the upper chain row of the fine screen square chain row.

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